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Pittsburgh Reference Libraries

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2012-06-18 04:57:13

Symbol: CRPO11 Group: Dicot Family: Rosaceae Duration: Perennial Growth Habit: Tree Shrub Native Status: L48    N Distribution: CrataegusporrectaAshe distribution:USA(IL, PA) Classification:       Kingdom   Plantae – Plants Subkingdom   Tracheobionta – Vascular plants Superdivision   Spermatophyta – Seed plants...

Tyrannosaurus
2012-03-21 21:47:44

Tyrannosaurus, meaning “tyrant lizard,” was a genus of theropod dinosaur from the Late Cretaceous Period (68 to 65 million years ago). It was among the last non-avian dinosaurs to exist prior to the Cretaceous-Tertiary extinction event. Perhaps the most famous Tyrannosaurus species, T. rex, was named in 1905 by Henry Fairfield Osborn, president of the American Museum of Natural History...